TY  - JOUR
AU  - D. Lau
AU  - B. Schröder
TI  - On the number of closed subsets of linear functions in the 6-valued logic
JO  - Beiträge zur Algebra und Geometrie
PY  - 1991
SP  - 19
EP  - 32
VL  - 31
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/BAG_1991__31_138470/
ID  - BAG_1991__31_138470
ER  -